liCCOiiLs 0/ J>ees. !''"'•> 



Xoinaiia inindanaonis, s]>. ii. 



^ ( = typc). — Lcuf^th I'.'i-j mm. 



Like y. banaUaunis, but differing thus : scape shorter and 

 stouter, Ijroadly (hill yellow on outer side ; third anteuual 

 joiul very loii;,', a little lonj^er than I'ourth, whieh is also 

 lon-jj; Hagelluiu entirely hlaek ; a small lij^ht mark al)ove 

 caeh eye (a faint traee of this ean he seen iti hdiiultaoiils) ; 

 inarkinj^s of al) loiueu and h'jjs suH'used and iliill, venter of 

 abdomen ferruj^inous. 



? . — Length a little over 5 mm. 



Like S. /usra, but smaller, clear bright ferruginous, tl»c 

 abdonu'u without dusky shades, except a sulYused eh)ngate 

 l)laek mark, on each suh* of hrst segment; sea[)e red, llagel- 

 lum very long, blaek ; third anteuual reddish beneath, very 

 long, conspicuously longer than fourth : 1). u. going basad of 

 t.-m. ; area of metathorax rugose basally ; a jjateh of |)ure 

 white liair on each side of metathorax. 



JIo/k l)ai)itan, Mindaiuio [Baki-r, ;U5.3, 3151). 



The following table se|)arates the above species, aiul also 

 those deseribed from Borneo and Java. The !Suniatran 

 species which doubtless exist are unknown: — 



Females 1 . 



Males (). 



1. Two submargiiial cells; small clear red species, 

 witli larjre round yellow spot on each side ot 



secoud abdominal t-oirmeut 7n((ki/iii(/cnsis, C'kll. 



Three submarfrinnl cells '2. 



'J. Second abdominal sej^ment marked with 

 white ; black species with red thorax 



(Borneo) imilai/utid, Cam. 



Secoud abdominal sejrraent not so marked. ... y. 



3. Head and thora.v red-brown; al)donien black 



or black-brown, marked with yellow (.lava) . /aianica, Triese. 

 If Jiead and thorax red, abdomen a!.so rod .... 4. 



4. Black, with i«ciUellinn and basal h.dl'of tirst 



abdominal segment yellow htiheri, Ckll. 



Bed o. 



o. Hind marjrins of abdominal segnuMit.i sulUised 



with dusky; tla<;ellum liiill red beneath. . . . liixcn, Sniitli. 



Abdonit-n clear red ; flagellinn black miiiddiiavtii.s, Ckll. 



0. Teguhe yellow or browni-h yellow; insect 



black, with only the tubercle.-*, tegulte, and 7m-(>/, var. ). 



.spot.-* on abdomen yellow (Java) nif/rescaut, T'riese (as 



Tej^uliO dark 7. 



7. Third antennal joint Ion;; inimfa/Kioiiis, Ckll. 



Third antennal joint short bcnialutonis, Ckll. 



N. testaceobnltoala, (.\im , cf , froiu Borneo, is at once 

 distinguished by the rufous thorax, that of the lMuli|)[)ine 

 and Java males being black. 



